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If the force exerted on cable AB by the motor is F =(100^3/2) N, where t is in seconds, determine the 50-kg crates velocity when t = 5s. The coefficents of static and kinetic friction between the cr
Assume that there is only one phase present and that the formation is homogeneous, but anisotropic. Further, assume that viscosity, formation volume factor, and the areas available for flow are cons
An oil storage area abandoned 19 yrs ago had oil spilled on the ground and saturated the soil at a concentration of 400mg/kg of soil. A recent soil sample shows a concentration of 20mg/kg.
An above ground pool needs to be drained. The drained water will be used to irrigate a garden and some trees at the bottom of the hill, the pool sits at the top of. You have a 1 inch diameter hose t
A sightseeing tourist submarine is constructed. The portals along the side can be assumed to be essentially flat, vertical and 1 meter in diameter. Assume a specific weight of seawater of 10,000 N/m
A canal was constructed running parallel to a river 1500 ft away. Both fully penetrate a sand aquifer with a hydraulic conductivity of 1.2 ft/d. The area is subject to rainfall of 1.8 ft/y and evapo
friction on the concrete surface creates a couple moment of 100 Mm on the blades of the trowel. Determines the magnitude of the resultant couple forces so that the resultant couple on the trowel is
The water line to a house is usually 3'4" copper tube. Find the flow rate that can be delivered and still maintain laminar flow in the tube
design a horizontal curve for a two-lane road. The road has 12-ft. lanes. Due to expansive excavation, it is determined that a maximum of 34 ft. can be cleared from the road's centerline toward the
A velocity field is given by V = xi + x(x-1)(y-1)j, where u and v are in feet. Plot the streamline that passes through x = 0 and y = 0. Compare this streamline with the streakline through the origin
Determine the magnitude of the couple force so that the resultant couple moment on the crank is zero.
A two post in ground car lift uses compressed air to force water under two aluminum pistons that move in unison (both pistons at same elevation) to raise and lower the vehicles.
determine the moment of the force f about an axis extending between A and C. Express the result as a cartesian vector. A is at the origin, C is at (4,3,0) and F = (4i + 12j -3k) lb coming out of B (
A water sample contains 118mg/L of bicarbonate ion, 19mg/L of carbonate ion, and has a pH of 9.5. What is the alkalinity of this water expressed as mg/L of CaCO3
To avoid the salinization of soil in a farming area, parallel drainage canals are to be installed to maintain the water table at a depth of at least 4m below the ground surface. It is thought that n
The storativity of the Jordan Aquifer (a regional confined aquifer) is 5 x 10-4 and the porosity is 0.3. The thickness of the aquifer is 200 ft. If the head in the Jordan has been pumped down by 100
The Jordan aquifer has been pumped for several decades, yet remains fully saturated. Explain where the water is coming from.
In a water table aquifer bounded on the ends by rivers, the hydraulic conductivity is 50 m/day. The hydraulic heads at x = 0 and x = 1000 m are 100 m and 90 m, respectively.
the two particles A and B start at the origin O and trevel in opposite directions along the circular path at constant speeds va =.7 m/s and vb =1.5 m/s . Determine the time when they collide and the
car traveling along a circular curve that has a radius of 50m. if its speed is 16m/s and is increasing uniformly at 8 m/s^2 determine the magnitude of its acceleration at this instant
a police officer stops a speeding driver on saturday nigt and gives hima breathalzer test. the test shows that his estimated blood alcohol content is above .08 g/dl, and this is considered evidence
At the beginning of compression the pressure is 14 psi and the temperature if 60°F. The temperature at the end of combustion heat addition is 1500°F and the compression ratio is 9. Use const
For a three span continuous beam ( three 20' spans ), subjected to some uniform load, what is Cb for each span. Assumed the beam is braced against translation and rotation at each support.
The phone lines to an airline reservation system are occupied 40% of the time. assume that the events that the lines are occupied on successive calls are independent. assume that 20 calls are placed